Re: How change grammar to equivalent LL(1) ?

Christopher F Clark <christopher.f.clark@compiler-resources.com>
Mon, 23 Dec 2019 05:57:50 -0500

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From: Christopher F Clark <christopher.f.clark@compiler-resources.com>
Newsgroups: comp.compilers
Date: Mon, 23 Dec 2019 05:57:50 -0500
Organization: Compilers Central
Injection-Info: gal.iecc.com; posting-host="news.iecc.com:2001:470:1f07:1126:0:676f:7373:6970"; logging-data="59138"; mail-complaints-to="abuse@iecc.com"
Keywords: LL(1)
Posted-Date: 23 Dec 2019 21:52:56 EST

Just a slight comment on what
Lasse =?iso-8859-1?q?Hiller=F8e?= Petersen <lhp+news@toft-hp.dk> wrote:


The technique of changing:
Expr: num | num plus Expr;
to
Expr: num ExprTailOpt; ExprTailOpt: plus Expr | /* empty */;
is called left-factoring.


By the way, "Opt" is the usual suffix for Ety.


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